Solar panel cost in Connecticut

The average cost for an installed residential solar system in Connecticut is currently $12,676 after claiming the 26% federal solar tax credit. This is $2.86 per watt.

Showing data for:

Utility provider: Eversource Energy Connecticut
Utility bill: $ 159

Prices based on a 6.4kW system, after 26% federal tax credit

Solar prices near you

Cost range of local prices


Net profit (savings less system cost)


Payback period

5.3-6.4 years

Recommended size for the selected utility bill


Chart 1: Distribution curve of CT residential solar cost 2020
SolarReviews average

Note: Prices after 26% Federal Solar Tax Credit

CT solar panel cost calculator

Cash flow graph based on cash purchase of a 6.4kW system

Connecticut solar power overview

Connecticut is a great state for home solar… for now. The state currently has a nice rebate program, and federal solar incentives and net metering are available, but the last two are set to change soon.

In 2019, the state legislature passed a bill to extend the state’s net metering law to all new solar owners who get their panels installed before the end of 2021. After that, going solar will be much less financially advantageous. 

The big federal solar tax credit will also step down from 26% in 2020 to just 10% in 2022 before disappearing for home solar in 2023. The combination of the end of net metering and the impending death of the solar tax credit means now is the time for Connecticut homeowners to consider installing solar panels.

Are solar panels worth it in Connecticut

Solar panels have fallen in price by more than 80% in the last ten years. In 2020 they also remain subsidized by the 26% federal tax credit and the net metering law, making them an excellent investment. They offer a return well above the long term average return from both the share market and also property investment.

Another way to look at this question is the levelized amount you will pay for each kWh of power you will use over the next 25 years with and without solar panels. As you can see below the savings are significant.

Levelized cost of solar energy
Levelized cost per kWh is the cost of the solar system divided by the total number of kWh produced by a solar system over it’s lifetime

6¢ /kWh

If you don't get solar

45¢ /kWh

(forecast avg Connecticut electric rates over the next 25 years)

Connecticut solar incentives & tax credits

Federal tax credit

The most significant incentive to install solar panels for homes and businesses is the federal solar tax credit. As mentioned above, the amount of the credit will decrease from 26% to 22% of the cost of the solar installation at the end of 2020. Because home and business owners want to get the largest incentive amount possible, solar panel installation companies will likely be flooded with new projects before year’s end. In order to maximize your savings potential, the best time to go solar in Connecticut is now.

Net metering

Connecticut is home to some of the highest utility rates in the US, and the current net metering law means you’ll get full credit for every kilowatt-hour your solar panels produce. When the sun is high in the sky, your panels produce more electricity than you use. Net metering means you get credit for that excess energy that you cash in when you need electricity at night when your panels aren’t producing. Remember, net metering in Connecticut will only be offered to people who install solar panels before 2022.

Other incentives

Connecticut itself offers the Expected Performance-Based Buydown Incentive program, which is a cash payment based on system size, and reduces the up-front cost of going solar.

Additionally, the Constitution State offers solar sales and property tax exemptions to reduce the up-front and long-term cost of going solar.

Table 2: Available incentive programs
Eligibility: Federal incentive
Type: Personal Tax Credit
Eligibility: State incentive
Type: Net Metering

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Top 10 solar panel brands installed in Connecticut in 2020

Average cost of solar panel installation in Connecticut by system size

System size*
Cash purchase

(After tax credit)

Financed purchase

(After tax credit)

4kW $12,500 $13,375
5kW $14,950 $15,997
6kW $17,130 $18,329
7kW $19,796 $21,182
8kW $23,120 $24,738
9kW $24,885 $26,627
10kW $27,380 $29,297

Best solar companies in the main cities of Connecticut

Different types of solar companies

Solar company reviews

Home solar basics

Is it better to lease or buy solar panels in Connecticut

You will save most money by buying your solar system rather than leasing it. Read more about the pros and cons of leasing vs buying solar.

How long do solar panels last?

Minimum of 25 years but generally 30 or more

How do solar panels work on a home?

Solar panels power your house when they can but your home uses the utility company for power at other times. In 2020 "solar systems with battery storage" are becoming more popular. These are known as hybrid systems.

How do solar panels work?

Grid-tied solar system

Solar panels are mounted on your roof and wired together in groups called solar arrays. The power they generate flows into a solar inverter where the direct current (DC) electricity is converted into alternating current (AC) electricity that can be used by your home or exported to the electric grid.

Off-grid solar system

Off-grid solar power involves meeting all your energy needs from the power of the sun. There’s no utility to fall back on. This means the solar installation needs to power the home not just during the day, when the sun is shining, but after dark as well.

Read more about types of home solar systems.

Do solar panels require regular maintenance?

No, but cleaning them can improve power generation if they are dirty.

Will residential solar power system cost fall in Connecticut in 2020?

Given this environment, and the effect of import tariffs placed on solar panels by the Trump administration during 2018, it is hard to see that solar power system prices in Connecticut will fall during 2020.

Can you buy DIY Solar Panel Kits and install them yourself in Connecticut?

Yes you can! In some cases, you can save $3,000 or more when you install solar yourself, even after receiving the federal tax credit. Despite the potential for savings, data from Lawrence Berkeley Labs shows that only about 3% of homeowners choose DIY solar. 

Reasons for this include:

  • The permitting and inspection process for the utility, the state, and municipalities can be quite complex.
  • The installation work is both dangerous and difficult, with electrical work having to be performed at heights.
  • Often times, solar electricity customers will be charged a premium for DIY installations, which can limit savings.
  • In some states, a solar system needs to be installed by a qualified solar contractor in order to take advantage of incentives. In Connecticut, a qualified solar contractor must hold a HIC license and either a PV-1 or E-1 license. All employees must have a PV-1, PV-2, E-1 or E-2 license, and there must be at least one employee who passed the NABCEP entry-level exam.


SolarReviews does not recommend DIY solar installations unless you have suitable skills. However, for those who do, SolarReviews published a comparison table displaying solar panel kit prices from the top 10 leading solar kit websites in the US.

Buy DIY solar panel kits online

Prices don’t include installation, permits or inspections

How much electricity do solar panel systems generate in Connecticut?

Depending on the location, solar panels will generate different amounts of electricity.

A solar system that is installed on a south-facing 31-degree pitch roof Connecticut will generate 1,153kWh of peak DC (direct current) capacity per year per 1kW in Connecticut.

Enter your details into the solar panel calculator to see how your location, roof tilt, and roof direction impacts solar panel production.

What are the pros and cons of installing solar panels in Connecticut?

The advantages of installing solar panels in Connecticut are that there are both state-based incentives and the federal tax credit available. In addition, Connecticut also has expensive utility rates which makes the overall return on investment for an installation of residential solar panels in the state one of the best in the nation.

The disadvantage of installing solar panels for your home in Connecticut is that there is less overall solar irradiation per year. So, a solar system produces less in Connecticut than it would in sunnier states, like Arizona.

However, the local and federal incentives more than make up for the limited sunshine in the state.

Enter your details to calculate the cost and savings you are likely to get from installing solar panels for your home.

What you can learn from our state solar panel calculator

This solar calculator requires you to input your address, utility company, your average monthly power spend - it tells you:

If you want to see all of the above but also see live pricing, the three best solar deals available in your city and get binding quotes from each of these solar companies then use this Connecticut solar panels calculator. This calculator requires you to also input your name and contact details because most of our 200+ installer partners will only authorize the sharing of their live solar pricing where we have validated that you are a real homeowner with a home in their service area. We respect the privacy of your data and only share your contact details with the solar companies you ask us to get binding quotes from.

Note: Please keep in mind that the best source of up-to-date information on incentives are the solar installers who specialize in your area.

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